Family history

My fathers name is Tomas Ayala Villanueva, His parents were Celestino Villanueva and Eva Ayala Villanueva. Eva's (my grandmother)parents were Dolores Caballero Ayala and Alejandro Ayala.Now the story that I've heard is Dolores was part of a rich family and Alejandro was part of a poor family.When they got married Dolores' family disowned her. Does anyone know anything about this?